(19)
(11) EP 1 130 666 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.03.2004 Bulletin 2004/11

(43) Date of publication A2:
05.09.2001 Bulletin 2001/36

(21) Application number: 01105002.8

(22) Date of filing: 01.03.2001
(51) International Patent Classification (IPC)7: H01M 4/32, H01M 10/26, H01M 4/62
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 01.03.2000 JP 2000056428

(71) Applicant: Sanyo Electric Co., Ltd.
Moriguchi-shi, Osaka (JP)

(72) Inventors:
  • Arisawa, Kenji
    Hyogo (JP)
  • Tamagawa, Takuya
    Mihara-gun, Hyogo (JP)

(74) Representative: Glawe, Delfs, Moll & Partner 
Patentanwälte Postfach 26 01 62
80058 München
80058 München (DE)

   


(54) An alkaline storage battery that can be used with stability in a wide temperature range


(57) An alkaline storage battery having stable charging/discharging characteristics over a wide temperature range is provided. A nickel sintered base member is filled with a predetermined amount of nickel hydroxide according to a chemical impregnating method to produce a nickel positive electrode 1. At least one compound selected from a Ca compound, an Sr compound, an Sc compound, a Y compound, and a lanthanoid compound is added to the nickel positive electrode 1. An alkaline electrolytic solution for this storage battery contains at least one of KOH, NaOH, RbOH, and CsOH as an electrolyte, and has an alkaline concentration of 10 mol/l or higher.






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